﻿#region MIT Licence
/*
 * Copyright (C) 2014 PdfCreative
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software 
 * and associated documentation files (the "Software"), to deal in the Software without restriction, 
 * including without limitation the rights to use, copy, modify, merge, publish, distribute, 
 * sublicense, and/or sell copies of the Software, and to permit persons to whom 
 * the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included 
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, 
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE 
 * AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
#endregion

using System;
using System.Collections.Generic;
using System.Text;

namespace PdfCreative.Pdf.Writer.Embedding.Decoders
{
    /// <summary>
    /// The DecoderAttribute attribute is used to decorate decoder classes with the decoding method
    /// that they support. Given a method, the DecoderStream base class can retrieve and return
    /// appropriate decoder stream subclasses.
    /// </summary>
    [AttributeUsage(AttributeTargets.Class)]
    internal class DecoderAttribute : Attribute
    {
        // Private fields
        // ==============
        #region Private fields
        private string _method;
        #endregion



        // Public properties
        // =================
        #region Public properties
        /// <summary>
        /// Sets or retrieves the decoding method.
        /// </summary>
        public string Method
        {
            get { return _method; }
            set { _method = value; }
        }
        #endregion



        // Base classoverrides
        // ===================
        #region Attribute overrides
        /// <summary>
        /// Indicates if this attribute instance matches the specified object instance.
        /// There can only be a match if the object instance is not a Null reference, and it matches
        /// the attribute's method property.
        /// </summary>
        /// <param name="obj">The object instance.</param>
        /// <returns>A boolean value that indicates if the attribute and object instance match (true)
        /// or not.</returns>
        public override bool Match(object obj)
        {
            bool isMatch = false;

            if (null != obj)
                isMatch = this.Method.Equals(obj.ToString(), StringComparison.InvariantCultureIgnoreCase);

            return isMatch;
        }
        #endregion



        // Public constructor
        // ==================
        #region public constructor
        /// <summary>
        /// Constructs a new instance using the specified predictor code.
        /// </summary>
        public DecoderAttribute(string method)
        {
            _method = method;
        }
        #endregion
    } // DecoderAttribute class

}
